campbell. massachusetts governor deval patrick will attend and at 2:50 p.m. eastern time bells across boston will ring to mark one week since those twin bombs went off just feet from the marathon's finish line changing so many lives in this that incident. joining me from washington, pete williams. let's talk about dzhokhar tsarnaev. he isn't talking yet but he's communicating. what more do we know about that and let's also talk about the issue of whether or not charges are coming today. >> okay. in terms of his communication, we're told that they are asking him questions for brief periods of time and that he is responding to some questions in writing. we don't know how complete or how thorough this is only that he's conscious and that he is responding to these questions, which during this stage will have to be confined to the issue of whether there's a continuing threat, whether other people were working with him, whether there were other bombs out there, things of that nature. now, on the ques